@Knobbe It does fairly well on my older iPhone 5 but definitely laggy on my Galaxy S4 and old iPad2. It should do well on iPhone 6 and Galaxy S6.
I'll work on enabling sound for the next generation of phones.
Thanks again for putting together the ROMs. We should get a Kickstarter campaign going and start a game dev company I'm sure there are plenty of people around the globe that would back the TSB annual updates alone.

@Knobbe, I love this ROM so much that I made a mobile web interface for it.
Presenting Tecmo Touch 2016 – just in time for Super Bowl 50!
Play it now in your mobile phone browser:
http://joemeeks.net/nes
Working on the hybrid mobile app for iOS & Android now... stay tuned!